1. Pengenalan
Thank you for choosing the Yaheetech Ergonomic Office Chair. This manual provides essential information for the safe assembly, operation, and maintenance of your new office chair. Please read these instructions carefully before use and retain them for future reference.

Image: The Yaheetech Ergonomic Office Chair, featuring a mesh back, adjustable headrest, and flip-up armrests, positioned in a contemporary office environment.
2. Maklumat Keselamatan
- Kapasiti Berat Maksimum: This chair is designed to support a maximum weight of 136 kg (300 lbs). Do not exceed this limit.
- Do Not Stand on the Chair: Standing on the chair can lead to injury and damage the product.
- Perhimpunan: Always follow the assembly instructions provided. Ensure all screws and bolts are securely tightened before use.
- Pemeriksaan biasa: Periksa semua pengikat secara berkala untuk memastikan ia kekal ketat.
- Kanak-kanak: Jauhkan kanak-kanak dari kawasan perhimpunan. Bahagian kecil mungkin bahaya tercekik.
- Penggunaan yang Dimaksudkan: This chair is intended for office and relaxing use. Do not use it for purposes other than its intended design.
3. Kandungan Pakej
Sahkan bahawa semua komponen hadir sebelum memulakan pemasangan. Jika mana-mana bahagian yang hilang atau rosak, sila hubungi sokongan pelanggan.
- Kusyen Tempat Duduk
- Backrest with Mesh
- Tempat letak kepala
- Tempat letak tangan (2)
- Silinder Angkat Gas
- Pangkalan Bintang
- Kastor (5)
- Plat Mekanisme
- Pek Perkakasan (skru, pencuci, sepana Allen)
4. Arahan Perhimpunan
Follow these steps to assemble your Yaheetech Ergonomic Office Chair. It is recommended to assemble the chair on a soft, clean surface to prevent damage.
- Pasang Kastor ke Pangkalan: Masukkan lima roda ke dalam lubang di hujung setiap kaki tapak bintang. Tolak dengan kuat sehingga ia klik pada tempatnya.
- Masukkan Pengangkat Gas: Letakkan silinder pengangkat gas ke dalam lubang tengah tapak bintang.
- Lampirkan Mekanisme pada Tempat Duduk: Align the mechanism plate with the screw holes on the underside of the seat cushion. Ensure the front of the mechanism faces the front of the seat. Secure with screws using the provided Allen wrench.
- Pasangkan Tempat Letak Tangan pada Tempat Duduk: Pasangkan tempat letak tangan pada sisi kusyen tempat duduk menggunakan skru yang ditetapkan.
- Attach Backrest to Seat/Mechanism: Connect the backrest to the seat and/or mechanism plate using the appropriate screws. Ensure a secure fit.
- Pasang Sandaran Kepala: Luncurkan penyandar kepala ke dalam slot yang ditetapkan di bahagian atas penyandar belakang.
- Sambungkan Pemasangan Tempat Duduk ke Lif Gas: Carefully place the assembled seat onto the gas lift cylinder, ensuring it is centered and fully seated.
5. Arahan Operasi
Your Yaheetech Ergonomic Office Chair offers several adjustment features to customize your seating experience.
5.1 Pelarasan Ketinggian Tempat Duduk

Image: A close-up of the chair's underside, illustrating the lever for seat height adjustment and the knob for tilt tension control. The seat height lever can also lock the rocking function.
To adjust the seat height, locate the lever on the right side under the seat. While seated, pull the lever up to lower the seat. To raise the seat, stand up slightly and pull the lever up. Release the lever at your desired height.
5.2 Tilt Function and Tension Control
The same lever used for seat height can also lock or unlock the chair's rocking function. Push the lever in to lock the backrest in an upright position, or pull it out to allow the chair to recline.
To adjust the tilt tension, turn the round knob located under the seat (as shown in the image above). Turn clockwise to increase tension (making it harder to recline) or counter-clockwise to decrease tension (making it easier to recline).
5.3 Adjustable Armrests

Image: The chair's armrests can be flipped up by 90 degrees, allowing the chair to be pushed closer to a desk or used as an armless chair.
The armrests on this chair can be flipped up by 90 degrees. This feature allows you to push the chair closer to your desk or convert it into an armless chair for more flexibility.
5.4 Headrest and Lumbar Support Adjustment

Image: A composite image highlighting the adjustable headrest, flexible lumbar support, flip-up armrests, adjustable balance function, and adjustable seat height, all contributing to the chair's ergonomic design.
The headrest is height-adjustable. Gently push or pull the headrest up or down to find your preferred position for neck and head support.
The flexible lumbar support can be adjusted to provide optimal support for your lower back. Adjust it to match the natural curve of your spine.

Image: An illustration detailing the ergonomic design of the chair, emphasizing support for the head, shoulders (mesh back for breathability), adjustable lumbar area, and forearms.
6. Penyelenggaraan
- Pembersihan: Lap kerusi dengan lembut, damp cloth. For mesh and fabric parts, use a mild soap solution if necessary, and then wipe with a clean, damp kain. Elakkan bahan kimia yang keras atau pembersih yang kasar.
- Penjagaan Kastor: Periodically clean hair and debris from the casters to ensure smooth movement.
- Pemeriksaan Pengikat: Every few months, check all screws and bolts to ensure they are tight. Re-tighten if necessary to maintain stability and safety.
- Elakkan Cahaya Matahari Terus: Prolonged exposure to direct sunlight can cause fading and material degradation.
7. Penyelesaian masalah
- Kerusi berdecit: Check all screws and bolts for tightness. Apply a small amount of silicone lubricant to moving parts if the squeaking persists.
- Chair is Unstable: Ensure all casters are fully inserted into the base and all screws are tightened. Verify the gas lift is properly seated in the base and mechanism.
- Pengangkat Gas Tidak Melaraskan: Ensure the adjustment lever is fully engaged or disengaged. If the issue persists, the gas lift may need replacement. Contact customer support.
- Pemutus Tidak Berguling dengan Lancar: Clean any debris (hair, dust) from the caster wheels. If damaged, casters may need replacement.
8. Spesifikasi

Image: Technical drawing displaying the various dimensions of the office chair, including overall height, width, seat depth, and armrest height, along with recommended user height and weight capacity.
| Ciri | Perincian |
|---|---|
| Bahan | Polyester mesh, foam, plywood, nylon, plastic, iron |
| Overall Dimensions (with headrest) | 66L × 62W × 122-132H cm (25.98"D x 24.41"W x 48.03"-51.97"H) |
| Saiz Tempat Duduk | 51 cm wide x 50 cm deep (20.08"W x 19.69"D) |
| Ketinggian Tempat Duduk yang Boleh Diselaraskan | 47.5-56.5 sm (18.7"-22.24") |
| Armrest to Floor Height | 66-75.5 sm (25.98"-29.72") |
| Kapasiti Berat Maksimum | 136 kg (300 lbs) |
| Berat Barang | 11.5 kg (25.3 lbs) |
| warna | Kelabu |
| Gaya Belakang | Belakang Jaring |
| Ciri Khas | Ergonomic, Head Support, Rolling, Swivel, Adjustable Armrest, Adjustable Headrest, Adjustable Lumbar Support |
9. Waranti dan Sokongan
For warranty information or technical support, please refer to the documentation included with your purchase or contact Yaheetech customer service directly. Contact details can typically be found on the manufacturer's official webtapak atau pada resit pembelian anda.
Please have your model number (99504737-decf-4836-ae40-3db794af450a) and proof of purchase ready when contacting support.





